- Add `core setup` to clone repos from registry into packages/
- Supports --dry-run, --only type filter
- Skips repos with clone: false
- Detects existing clones
- Add `core doctor` to check development environment
- Checks git, gh, php, composer, node
- Verifies SSH key exists
- Checks gh CLI authentication
- Shows workspace registry status
- Update Repo struct with Clone field for skip control
- Change Repo.Type from RepoType to string for flexibility
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>